Feit Electric ESL40TN/D 42-Watt Compact Fluorescent High-Wattage Bulb, Daylight This bulb was very disappointing. It is most definitely not a suitable replacement for a 200 Watt incandescent. I have an area in the basement that has a single fixture and a 200 watt incandescent provides more than adequate light for that area. I put this bulb in and it would be suitable for accent lighting but hardly adequate for normal tasks. It was like twilight in the early evening. I have no objection to a bluish light but this provided far less light than a 100 watt incandescent let alone the 200 watt. My hopes of using less energy were thwarted. Watts, or the wattage of light, is the power that is used to operate the light source. Lumens refer to the brightness of that source. Specifically Lumens are the measurement units of "luminous flux." This is the total number of packets of light that is created by a source of light. I erroneously looked at the advertisement for this b...